Embryology Flashcards
1
Q
Which three veins feed into the sinus venosus?
A
- vitelline vein
- Umbilican vein
- cardinal vein (anterior and posterior)
2
Q
The separation between the heart muscle and the region of the right atrium which originated from the sinus venosus
A
crista terminalis
3
Q
What does the left horn of the sinus venosus eventually contribute to?
A
coronary sinus
4
Q
What does the 3rd aortic arch give rise to?
A
The common carotid arteries
5
Q
Where do vitelline veins drain blood from?
A
yolk sac via liver
6
Q
What structure allows rapid transport of umbilical blood through the liver?
A
Ductus venosus
7
Q
What does the ductus arteriosus become after birth?
A
Ligmentum arteriosum
8
Q
What is the ductus arteriosus?
A
connects the pulmonary artery and the aorta to carry blood away from the heart (bypassing the pulmonary circulation) in the foetus
